电测与仪表
電測與儀錶
전측여의표
ELECTRICAL MEASUREMENT & INSTRUMENTATION
2014年
11期
45-49
,共5页
形态学滤波%变步长%多级结构元素%电力信号消噪
形態學濾波%變步長%多級結構元素%電力信號消譟
형태학려파%변보장%다급결구원소%전력신호소조
morphology filter%variable step size%multilevel structure element%power signal denoising
针对传统数学形态学滤波器存在的统计偏移现象和对结构元素选取的局限,提出了一种多级结构元素的改进方法,并采用变步长的方法构建了一种多级广义自适应形态学滤波器,在提高滤波精度的同时,降低了对结构元素选取的限制,并且该滤波器的使用更加灵活。最后,将该滤波器应用到含有多种噪声叠加的电力信号消噪中,通过算例仿真,验证了提出的多级广义自适应形态学滤波器相比于传统的数学形态学滤波器,在电力信号消噪中具有更好地滤波效果。
針對傳統數學形態學濾波器存在的統計偏移現象和對結構元素選取的跼限,提齣瞭一種多級結構元素的改進方法,併採用變步長的方法構建瞭一種多級廣義自適應形態學濾波器,在提高濾波精度的同時,降低瞭對結構元素選取的限製,併且該濾波器的使用更加靈活。最後,將該濾波器應用到含有多種譟聲疊加的電力信號消譟中,通過算例倣真,驗證瞭提齣的多級廣義自適應形態學濾波器相比于傳統的數學形態學濾波器,在電力信號消譟中具有更好地濾波效果。
침대전통수학형태학려파기존재적통계편이현상화대결구원소선취적국한,제출료일충다급결구원소적개진방법,병채용변보장적방법구건료일충다급엄의자괄응형태학려파기,재제고려파정도적동시,강저료대결구원소선취적한제,병차해려파기적사용경가령활。최후,장해려파기응용도함유다충조성첩가적전력신호소조중,통과산례방진,험증료제출적다급엄의자괄응형태학려파기상비우전통적수학형태학려파기,재전력신호소조중구유경호지려파효과。
Aiming at the existing statistical bias phenomenon and the limitation of the structure element selection of tra-ditional mathematical morphological filters, a multilevel structure element has been presented in this paper. The varia-ble step length method is adopted to construct a kind of multilevel generalized self -adaptive morphological filter, which will improve the filtering accuracy and reduce the restrictions on the structure element selection at the same time. The operation of the proposed filter will be more flexible. At last, the filter is introduced in the power signal de-noising, the background noise of which contains a variety of noise, and the simulation results verify the better filtering effect of multilevel generalized self-adaptive morphological filter on power signal denoising compared with the tradi-tional filter.